Visualization for blood flow in skin image data

ABSTRACT

Blood flow beneath a user&#39;s skin, for example, in a user&#39;s face may be visually rendered. In some aspects, a plurality of differences is determined in the intensity of pixels of a first image and the corresponding pixels of a subsequent second image. In some aspects, this plurality of differences is enhanced to accentuate a characteristic associated with the first image and the second image. The enhanced plurality of differences is visually rendered for each subsequent comparison of pixel intensity values.

BACKGROUND

Imaging techniques currently used by healthcare professionals includemagnetic resonance imaging (MRI), ultrasound scanning, and computerizedtomography (CT) scanning. It has been observed that the informationgathered by these technologies can be useful in assessing a patient'soverall health and risk for specific conditions or diseases. Whileuseful, these technologies are expensive, require specialized trainingand expertise to operate, and are limited to certain hospital orclinical settings. Thus, the information these techniques provide iscostly and hard to access.

It has been observed that some individuals wish to assess their ownhealth and fitness outside of a professional healthcare environment.Personal trainers and coaches monitor athletes' physical status before,during, and after exercising to evaluate performance and maintainsafety. Additionally, some consumer devices allow users to gauge theirathletic performance. Pedometers, for example, can track how much anindividual walks.

Cameras have been utilized to identify and track individuals. However,these techniques have been unable to adequately address determining themotion of blood flow through a person's blood vessels and presenting avisualization of the blood flow.

This Background is provided to introduce a brief context for the Summaryand Detailed Description that follow. This Background is not intended toaid in determining the scope of the claimed subject matter nor be viewedas limiting the claimed subject matter to implementations that solve anyor all of the disadvantages or problems presented above.

SUMMARY

Disclosed herein are systems and methods for skin blood flowvisualization.

In one aspect, a method includes determining a plurality of differencesin intensity, the plurality of differences made up of the difference inintensity between each pixel intensity of a plurality of pixelintensities of a first image and a corresponding plurality of pixelintensities of a subsequent second image. The differences in intensitycomprise a delta image. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with the delta image. Theenhanced delta image is visually rendered for each subsequentcomparison.

In another aspect, a system has a processor and a memory coupled to theprocessor, the memory having stored on it executable instructions thatwhen executed by the processor cause the processor to effectuateoperations. The operations include determining a plurality ofdifferences in intensity comprising a difference in intensity betweeneach pixel intensity of a plurality of pixel intensities of a firstimage and each pixel intensity of a corresponding plurality of pixelintensities of a subsequent second image. The differences in intensitycomprise a delta image. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with the image. The enhanceddelta image is visually rendered for each subsequent comparison.

In another aspect, a computer readable storage medium comprisesprocessor readable code for programming a processor to determine aplurality of differences in intensity. The plurality of differences inintensity comprises a difference in intensity between each pixelintensity of a plurality of pixel intensities of an image and each pixelintensity of a corresponding plurality of pixel intensities of asubsequent image. The differences in intensity comprise a delta image. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with the image. The enhanced delta image isvisually rendered for each subsequent comparison.

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter. Furthermore, the claimed subject matter is not limited toimplementations that solve any or all disadvantages noted in any part ofthis disclosure.

It should be appreciated that the above-described subject matter may beimplemented as a computer-controlled apparatus, a computer process, acomputing system, or as an article of manufacture such as one or morecomputer-readable storage media. These and various other features willbe apparent from a reading of the following Detailed Description and areview of the associated drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an illustrative computing environment in which skin bloodflow visualization may be implemented;

FIG. 2 shows an illustrative block diagram of a capture device that maybe used in part to implement skin blood flow visualization;

FIG. 3 shows a flowchart of an illustrative method of skin blood flowvisualization;

FIG. 4 shows a flowchart of an illustrative method of skin blood flowvisualization;

FIG. 5A shows an illustrative example of skin blood flow visualizationof a human face;

FIG. 5B shows an illustrative example of a skin blood flow visualizationof a human face;

FIG. 6 shows a block diagram of an illustrative multimedia console thatmay be used in part to implement the present skin blood flowvisualization; and

FIG. 7 shows a block diagram of an illustrative computing platform thatmay be used in part to implement skin blood flow visualization.

Like reference numerals indicate like elements in the drawings. Elementsare not drawn to scale unless otherwise indicated.

DETAILED DESCRIPTION

Disclosed herein is skin blood flow visualization. Blood flow beneath aperson's skin may be tracked by monitoring changes in the coloration ofa person's skin. For example, changes in the “blush,” or coloration offacial skin, may allow blood flow through a person's face to bedetermined. Images may be captured over time allowing the comparison ofthe color intensity of the skin at one point in time and the colorintensity of the same skin subsequently. The changes in colorationreflect the flow of blood through blood vessels beneath the skin in thatarea. A visualization of this blood flow may be generated by capturingimages of that area of skin at one point and capturing subsequent imagesof that area of skin.

Turning to the drawings, FIG. 1 shows an illustrative computingenvironment 200 in which skin blood flow visualization may beimplemented. It should be appreciated that environment 200 is providedas an example and that other environments which include other types ofdevices, applications, and usage scenarios may also be able to utilizethe principles described herein. Environment 200 includes a computingplatform such as multimedia console 100 that is typically configured forrunning gaming and non-gaming applications using local and/or networkedprogramming and content, playing pre-recorded multimedia such as opticaldiscs, including Digital Versatile Discs (DVDs), Blu-ray Discs (BDs),and Compact Discs (CDs), streaming multimedia from a network,participating in social media, browsing the Internet and other networkedmedia and content, or the like, using a coupled audio/visual display208, such as a television.

Multimedia console 100 in this example is operatively coupled to capturedevice 204 which may be implemented using one or more video cameras thatare configured to visually monitor a physical space that is occupied byuser 220. As described in more detail below, capture device 204 isconfigured to capture, track, and analyze the movements and/or gesturesof user 220 so that they can be used as controls that may be employed toaffect, for example, an application or an operating system running onmultimedia console 100. Various motions of the hands or other body partsof user 220 may correspond to common system wide tasks such as selectinga game or other application from a main user interface.

For example, user 220 can navigate among selectable objects that includevarious icons that are shown on coupled display 208, browse throughitems in a hierarchical menu, open a file, close a file, save a file, orthe like. In addition, user 220 may use movements and/or gestures toend, pause, or save a game, select a level, view high scores,communicate with a friend, etc. Virtually any controllable aspect of anoperating system and/or application may be controlled by movements ofuser 220. A full range of motion of user 220 may be available, used, andanalyzed in any suitable manner to interact with an application oroperating system that executes in environment 200.

Capture device 204 can also be utilized to capture, track, and analyzemovements by user 220 to control gameplay as a gaming applicationexecutes on the multimedia console 100. For example, as shown in FIG. 1,an application such as blood flow visualization application 216 whichuses display 208 to provide a visual representation of the blood flowbeneath an area of skin of the body of user 220, such as the face, touser 220. User 220 may make movements, such as jumping jacks and othercalisthenics, to cause fluctuations in the blood flow visualization dueto altered blood flow. User may concurrently monitor the blood flowvisualization while performing other tasks, such as controlling othergaming applications. Movements of the user 220 may be recognized andanalyzed such that corresponding movements for application control areperformed.

FIG. 2 shows illustrative functional components of capture device 204that may be used as part of a target recognition, analysis, and trackingsystem 200 to recognize human and non-human targets in a capture area ofthe physical space without the use of special sensing devices attachedto the subjects, uniquely identify them, and track them inthree-dimensional space. Capture device 204 may be configured to capturevideo with depth information including a depth image that may includedepth values via any suitable technique including, for example,time-of-flight, structured light, stereo image, or the like. In someimplementations, capture device 204 may organize the calculated depthinformation into “Z layers,” or layers that may be perpendicular to aZ-axis extending from the depth camera along its line of sight.

As shown in FIG. 2, capture device 204 includes image camera component303. Image camera component 303 may be configured to operate as a depthcamera that may capture a depth image of a scene. The depth image mayinclude a two-dimensional (2D) pixel area of the captured scene whereeach pixel in the 2D pixel area may represent a depth value such as adistance in, for example, centimeters, millimeters, or the like of anobject in the captured scene from the camera. In this example, imagecamera component 303 includes IR light component 306, IR camera 311, andvisible light RGB camera 314.

Various techniques may be utilized to capture depth video frames. Forexample, in time-of-flight analysis, IR light component 306 of capturedevice 204 may emit an infrared light onto the capture area and may thendetect the backscattered light from the surface of one or more targetsand objects in the capture area using, for example, IR camera 311 and/orRGB camera 314. In some aspects, pulsed infrared light may be used suchthat the time between an outgoing light pulse and a correspondingincoming light pulse may be measured and used to determine a physicaldistance from the capture device 204 to a particular location on thetargets or objects in the capture area. Additionally, the phase of theoutgoing light wave may be compared to the phase of the incoming lightwave to determine a phase shift. The phase shift may then be used todetermine a physical distance from the capture device to a particularlocation on the targets or objects. Time-of-flight analysis may be usedto indirectly determine a physical distance from capture device 204 to aparticular location on the targets or objects by analyzing the intensityof the reflected beam of light over time via various techniquesincluding, for example, shuttered light pulse imaging.

In other implementations, the capture device 204 may use structuredlight to capture depth information. In such an analysis, patterned light(i.e., light displayed as a known pattern such as a grid pattern or astripe pattern) may be projected onto the capture area via, for example,IR light component 306. Upon striking the surface of one or more targetsor objects in the capture area, the pattern may become deformed inresponse. Such a deformation of the pattern may be captured by, forexample, by IR camera 311 and/or the RGB camera 314 and may then beanalyzed to determine a physical distance from the capture device to aparticular location on the targets or objects.

Capture device 204 may utilize two or more physically separated camerasthat may view a capture area from different angles, to obtain visualstereo data that may be resolved to generate depth information. Othertypes of depth image arrangements using single or multiple cameras canalso be used to create a depth image. Capture device 204 may furtherinclude microphone 318. Microphone 318 may include a transducer orsensor that may receive and convert sound into an electrical signal.Microphone 318 may be used to reduce feedback between the capture device204 and multimedia console 100 in the target recognition, analysis, andtracking system 200. Additionally, microphone 318 may be used to receiveaudio signals that may also be provided by user 220 to controlapplications such as game applications, non-game applications, or thelike that may be executed by multimedia console 100.

Capture device 204 may further include processor 325 that may be inoperative communication with image camera component 303 over bus 328.Processor 325 may include a standardized processor, a specializedprocessor, a microprocessor, or the like that may execute instructionsthat may include instructions for storing profiles, receiving the depthimage, determining whether a suitable target may be included in thedepth image, converting the suitable target into a skeletalrepresentation or model of the target, or any other suitableinstruction. Capture device 204 may further include memory component 332that may store the instructions that may be executed by processor 325,images or frames of images captured by the cameras, user profiles or anyother suitable information, images, or the like. According to oneexample, memory component 332 may include random access memory (RAM),read only memory (ROM), cache, Flash memory, a hard disk, or any othersuitable storage component. As shown in FIG. 2, memory component 332 maybe a separate component in communication with image capture component303 and processor 325. Alternatively, memory component 332 may beintegrated into processor 325 and/or image capture component 303. In oneaspect, some or all of components 303, 306, 311, 314, 318, 325, 328, and332 of capture device 204 are located in a single housing.

Capture device 204 operatively communicates with the multimedia console100 over a communication link 335. The communication link 335 may be awired connection including, for example, a USB (Universal Serial Bus)connection, a Firewire connection, an Ethernet cable connection, or thelike and/or a wireless connection such as a wireless 802.11 connection.Multimedia console 100 can provide a clock to the capture device 204that may be used to determine when to capture, for example, a scene viacommunication link 335. Capture device 204 may provide the depthinformation and images captured by, for example, IR camera 311 and/orRGB camera 314, including a skeletal model and/or facial tracking modelthat may be generated by capture device 204, to multimedia console 100via the communication link 335. Multimedia console 100 may then use theskeletal and/or facial tracking models, depth information, and capturedimages to, for example, create a virtual screen, adapt the userinterface, and control an application.

Motion tracking engine 341 uses the skeletal and/or facial trackingmodels and the depth information to provide a control output to one moreapplications (representatively indicated by blood flow visualizationapplication 216 in FIG. 2) running on the multimedia console 100 towhich capture device 204 is coupled. The information may also be used bygesture recognition engine 351, depth image processing engine 354, oroperating system 359. The depth image processing engine 354 uses thedepth images to track motion of objects, such as the user and otherobjects. The depth image processing engine 354 will typically report tooperating system 359 an identification of each object detected and thelocation of the object for each frame. Operating system 359 can use thatinformation to update the position or movement of an avatar, forexample, or other images shown on the display 108, or to perform anaction on the user interface.

Gesture recognition engine 351 may utilize a gestures library (notshown) that can include a collection of gesture filters, each comprisinginformation concerning a gesture that may be performed, for example, bya skeletal model (as the user moves). Gesture recognition engine 351 maycompare the frames captured by capture device 204 in the form of theskeletal model and movements associated with it to the gesture filtersin the gesture library to identify when a user (as represented by theskeletal model) has performed one or more gestures. Those gestures maybe associated with various controls of an application. Thus, multimediaconsole 100 may employ the gestures library to interpret movements ofthe skeletal model and to control an operating system or an applicationrunning on the multimedia console based on the movements.

FIG. 3 shows a flowchart of illustrative method of skin blood flowvisualization 370. In 374, a first image is collected from a capturedevice, such as capture device 204. In 378, a second image is collectedfrom the capture device. The first image and the second image, forexample, may be subsequent images taken from a stream of video of anarea of a user's skin, such the user's face. Each pixel of each imagemay be treated on its own. In 382, the intensity values for the pixelsof the second image are subtracted from the intensity values of thecorresponding pixels of the first image. The intensity value for a pixelmay be, for example, the intensity of one more color channels, such asthe infrared channel, in that pixel. In 386, the differences in valuesfor each pixel are used to create a delta image. In 390, the contrast ofthe delta image is enhanced. In 394, the enhanced delta image isrendered and displayed.

FIG. 4 shows a flowchart of an illustrative method of skin blood flowvisualization. In 404, a first image is collected from a capture device,such as capture device 204. In 408, a second image is collected from thecapture device. The first image and the second image, for example, maybe subsequent images taken from a stream of video of an area of a user'sskin, such as the user's face. Each pixel of each image may be treatedon its own. In 412, the intensity values for the pixels of the secondimage are subtracted from the intensity values of the correspondingpixels of the first image. The intensity value for a pixel may be, forexample, the intensity of one more color channels, such as the infraredchannel, in that pixel. In 416, the differences in values for each pixelare used to create a delta image. In 420, the delta image is numericallyintegrated per pixel over time. In 424, bias correction is applied tothe delta image. Bias correction may comprise, for example, reducing thepixel intensity values of the delta image by a percentage of theirvalues. In 428, the contrast of the delta image is enhanced. In 432, theenhanced delta image is rendered and displayed.

FIG. 5A illustrates a visualization of blood flow in a human face. Humanface 604 a is captured in image 602. Capturing may be performed by, forexample, capture device 204. The same human face is subsequentlycaptured in image 606, but the data, including the particular pixels,comprising human face 604 b is not identical to that of image 602.

In 610, intensity map 615 a illustrates intensities of some pixels inimage 602. Exemplary pixel groups 612 a, 616 a, 618 a, and 620 a arecomprised of individual pixels and represent some areas of pixelintensities for image 602. A pattern of dots is used to indicate thelevel of intensity of the pixels in that pixel group. The pixelintensities as shown vary in pattern density, with higher intensitybeing represented by a greater pattern density. Thus, pixel group 618 ahas a higher intensity than pixel group 620 a, which in turn has ahigher intensity than pixel group 616 a, which in turn has a higherpixel intensity than pixel group 612 a. While the pixel groups shownreflect contiguous pixels sharing the same level of pixel intensity,pixels of the same image may share an intensity level without beingadjacent. Furthermore, while a subset of the overall pixels of image 602is shown, the pixels of the entire image may be analyzed, or particularregions may be analyzed. These regions may be designated by userselection or determined using the pixel intensity values. For example,background pixels may be disregarded after it is determined that all thebackground pixels have a certain intensity value or that they fall intoa certain intensity value range.

In 614, intensity map 615 b shows the pixel intensities of thecorresponding pixels of image 606. Thus, the pixels in pixel group 616 bhave higher pixel intensities than the corresponding pixels in pixelgroup 616 a, whereas the pixels in pixel group 618 b have lower pixelintensities than corresponding pixels in pixel group 618 a. The pixelsin pixel group 612 b have a higher pixel intensity than thecorresponding pixels of pixel group 612 a, and the pixels of pixel group620 b have a lower pixel intensity than the corresponding pixels ofpixel group 620 a. Considered as subsequent images, some areas of humanface 604 a have had an increase in pixel intensity while others havedecreased or stayed the same.

In 628, delta image 629 is comprised of the differences in correspondingpixels between intensity map 615 a and intensity map 615 b. Thus, forpixel groups where the difference is large, a denser pattern is shown.Shading is used to indicate whether the pixel intensity of the pixelincreased or decreased. For example, pixel group 630 has a moderatedensity reflecting the moderate change in pixel intensity, but is alsoshaded darkly to indicate an increase in pixel intensity. For pixelgroup 632, the pattern is dense and lightly shaded, indicating a moresignificant decrease in pixel intensity. Pixel group 634 has a lowpattern density and is lightly shaded, indicating a small decrease inpixel intensity. Pixel group 636 has a low pattern density and is shadeddarkly, indicating a small increase in pixel intensity.

Pixel intensity may be evaluated on a range of values. For example, thescale may be from 0 to 65535. Each pixel intensity value may correspondto a unique indicator of the pixel intensity value. For example, eachpixel intensity value may correspond to a unique color. The intensitymay then be rendered as the corresponding color for the pixel.Furthermore, a change of each amount from the lower bound of the rangeto the upper bound of the range may correspond to a change in a measureindicating the degree of change. For example, if pixel intensity is acolor, the degree of change may be indicated by how bold the color is.Additionally, the pixel intensity value, instead of corresponding to aunique indicator, may fall within a range of values tied to a uniqueindicator. For example, a pixel with the intensity value of15,000-25,000 may be assigned to a specific color. Ranges of values mayalso be used for the degree of change. For example, a change of3,000-5,000 may indicate a certain level of boldness.

While pattern density is shown in FIG. 5A to indicate and communicate alevel of pixel intensity, it should be appreciated that pixel intensitychanges could be represented in a variety of ways. For example, changesof increased intensity may be represented in a delta image with onecolor and while decreases in intensity are represented with another,with the boldness of the color indicating the relative increase ordecrease in intensity. For example, red may be used to indicate anincrease in pixel intensity and green a decrease in pixel intensity.This may be achieved by correlating pixel intensity values with rangesof a color model, such as the RGB or CMYK color models. In anotherexample, pixel intensity values may be tied to the entire range of acolor model, with increases in intensity corresponding to a change in avalue or values of a color model, and decreases in intensitycorresponding to a different change in a value or values of a colormodel.

FIG. 5B illustrates a visualization of a blood flow in a human face. InFIG. 5B, delta images 804 a, 804 b, and 804 c comprise series of deltaimages 800 of a human face. Delta image 804 a precedes delta image 804b, which precedes delta image 804 c. Delta images 804 a, 804 b, and 804c are generated by comparing the pixel intensities of a captured imageof the human face at subsequent times, as shown in FIG. 5A. Delta image804 a may be generated from the difference in pixel intensity valuesfrom a first image to a second image. Delta image 804 b may be generatedfrom the change in pixel intensity values from the second image to athird image. Delta image 804 c may be generated from the change in pixelintensity values from the third image to a fourth image.

Delta image 804 a is comprised of pixels with intensity values. Thepixels are shown divided into pixel groups 808 a, 812 a, 816 a, and 820a. Pixels in each pixel group share the same intensity value as theother pixels in the group. It should be appreciated that while pixelgroups are shown, each individual pixel may be treated individually.Pixel groups of the delta image are shaded lightly for a decrease inpixel intensity of the corresponding pixels of the image of the humanface, while darkly shaded pixel groups indicate an increase in pixelintensity. Pixel groups with a tight dot pattern reflect a relativelymore significant change, while a less tight dot pattern indicates a lesssignificant change. Delta images 804 b is similarly divided into pixelgroups 808 b, 812 b, 816 b, 820 b, and 824 b. Delta image 804 c issimilarly divided into pixel groups 808 c, 812 c, 816 c, and 820 c.

Integrated delta images 828 a, 828 b, and 828 c comprise integrateddelta image series 828. Integrated delta image 828 a comprises the pixelintensity values of delta image 804 a. Thus, the pixel intensity valuesin pixel group 828 a equal the corresponding pixel intensity values inpixel group 808 a, the pixel intensity values in pixel group 836 a equalthe corresponding pixel intensity values in pixel group 812 a, the pixelintensity values in pixel group 840 a equal the corresponding pixelintensity values in pixel group 816 a, and the pixel intensity values inpixel group 844 a equal to the corresponding pixel intensity values inpixel group 820 a.

The pixel intensity values of pixel group 832 b equal the correspondingpixel intensity values of pixel group 808 b added to the correspondingpixel intensity values of pixel group 828 a. The pixel intensity valuesof pixel group 836 b equal the corresponding pixel intensity values ofpixel group 812 b added to the corresponding pixel intensity values ofpixel group 836 a. The pixel intensity values of pixel group 840 b equalthe corresponding pixel intensity values of pixel group 816 b added tothe corresponding pixel intensity values of pixel group 840 a. The pixelintensity values of pixel group 844 b equal the corresponding pixelintensity values of pixel group 820 b added to the corresponding pixelintensity values of pixel group 844 a.

In turn, for integrated delta image 828 c, the pixel intensity values ofpixel group 832 c equal the corresponding pixel intensity values ofpixel group 808 c added to the corresponding pixel intensity values ofpixel group 828 b. The pixel intensity values of pixel group 836 c equalthe corresponding pixel intensity values of pixel group 812 c added tothe corresponding pixel intensity values of pixel group 836 b. The pixelintensity values of pixel group 840 c equal the corresponding pixelintensity values of pixel group 816 b added to the corresponding pixelintensity values of pixel group 840 b. The pixel intensity values ofpixel group 844 c equal the corresponding pixel intensity values ofpixel group 820 c added to the corresponding pixel intensity values ofpixel group 844 b.

This may continue for subsequent images and integrated delta imageseries 828 may be rendered and displayed. Integrated delta image series828 may correspond to the blood flow in the human face in the images.For example, integrated delta image series 828 may correspond to theblood flow of user 220 in FIG. 2. Images of the face of user 220captured by capture device 204 may be used in generating the requisitedelta images which in turn are used in generating the integrated deltaimages comprising integrated delta image series 828. Integrated deltaimage series 828 may then be rendered and displayed using display 208 inblood flow visualization application 216.

FIG. 6 shows a block diagram of illustrative multimedia console 100 thatmay be used in part to implement the present skin blood flowvisualization. FIG. 7 is an illustrative functional block diagram ofmultimedia console 100 shown in FIG. 1. As shown in FIG. 7, multimediaconsole 100 has a central processing unit (CPU) 101 having a level 1cache 102, a level 2 cache 104, and a Flash ROM (Read Only Memory) 106.The level 1 cache 102 and the level 2 cache 104 temporarily store dataand hence reduce the number of memory access cycles, thereby improvingprocessing speed and throughput. The CPU 101 may be configured with morethan one core, and thus, additional level 1 and level 2 caches 102 and104. The Flash ROM 106 may store executable code that is loaded duringan initial phase of a boot process when the multimedia console 100 ispowered ON.

A graphics processing unit (GPU) 108 and a video encoder/video codec(coder/decoder) 114 form a video processing pipeline for high speed andhigh resolution graphics processing. Data is carried from the GPU 108 tothe video encoder/video codec 114 via a bus. The video processingpipeline outputs data to an A/V (audio/video) port 140 for transmissionto a television or other display. A memory controller 110 is connectedto the GPU 108 to facilitate processor access to various types of memory112, such as, but not limited to, a RAM.

Multimedia console 100 includes an I/O controller 120, a systemmanagement controller 122, an audio processing unit 123, a networkinterface controller 124, a first USB host controller 126, a second USBcontroller 128, and a front panel I/O subassembly 130 that may beimplemented on a module 118. The USB controllers 126 and 128 serve ashosts for peripheral controllers 142(1)-142(2), a wireless adapter 148,and an external memory device 146 (e.g., Flash memory, external CD/DVDROM drive, removable media, etc.). The network interface controller 124and/or wireless adapter 148 provide access to a network (e.g., theInternet, home network, etc.) and may be any of a wide variety ofvarious wired or wireless adapter components including an Ethernet card,a modem, a Bluetooth module, a cable modem, and the like.

System memory 143 is provided to store application data that is loadedduring the boot process. A media drive 144 is provided and may comprisea DVD/CD drive, hard drive, or other removable media drive, etc. Themedia drive 144 may be internal or external to the multimedia console100. Application data may be accessed via the media drive 144 forexecution, playback, etc. by the multimedia console 100. The media drive144 is connected to the I/O controller 120 via a bus, such as a SerialATA bus or other high speed connection (e.g., IEEE 1394).

The system management controller 122 provides a variety of servicefunctions related to assuring availability of the multimedia console100. The audio processing unit 123 and an audio codec 132 form acorresponding audio processing pipeline with high fidelity and stereoprocessing. Audio data is carried between the audio processing unit 123and the audio codec 132 via a communication link. The audio processingpipeline outputs data to the AN port 140 for reproduction by an externalaudio player or device having audio capabilities.

The front panel I/O subassembly 130 supports the functionality of thepower button 150 and the eject button 152, as well as any LEDs (lightemitting diodes) or other indicators exposed on the outer surface of themultimedia console 100. A system power supply module 136 provides powerto the components of the multimedia console 100. A fan 138 cools thecircuitry within the multimedia console 100.

The CPU 101, GPU 108, memory controller 110, and various othercomponents within the multimedia console 100 are interconnected via oneor more buses, including serial and parallel buses, a memory bus, aperipheral bus, and a processor or local bus using any of a variety ofbus architectures. By way of example, such architectures can include aPeripheral Component Interconnects (PCI) bus, PCI-Express bus, etc.

When the multimedia console 100 is powered ON, application data may beloaded from the system memory 143 into memory 112 and/or caches 102 and104 and executed on the CPU 101. The application may present a graphicaluser interface that provides a consistent user experience whennavigating to different media types available on the multimedia console100. In operation, applications and/or other media contained within themedia drive 144 may be launched or played from the media drive 144 toprovide additional functionalities to the multimedia console 100.

The multimedia console 100 may be operated as a standalone system bysimply connecting the system to a television or other display. In thisstandalone mode, the multimedia console 100 allows one or more users tointeract with the system, watch movies, or listen to music. However,with the integration of broadband connectivity made available throughthe network interface controller 124 or the wireless adapter 148, themultimedia console 100 may further be operated as a participant in alarger network community.

When the multimedia console 100 is powered ON, a set amount of hardwareresources are reserved for system use by the multimedia consoleoperating system. These resources may include a reservation of memory(e.g., 16 MB), CPU and GPU cycles (e.g., 5%), networking bandwidth(e.g., 8 kbs), etc. Because these resources are reserved at system boottime, the reserved resources do not exist from the application's view.

In particular, the memory reservation may be large enough to contain thelaunch kernel, concurrent system applications, and drivers. The CPUreservation may be constant such that if the reserved CPU usage is notused by the system applications, an idle thread will consume any unusedcycles.

With regard to the GPU reservation, lightweight messages generated bythe system applications (e.g., pop-ups) are displayed by using a GPUinterrupt to schedule code to render pop-ups into an overlay. The amountof memory required for an overlay depends on the overlay area size andthe overlay may scale with screen resolution. Where a full userinterface is used by the concurrent system application, it is possibleto use a resolution independent of application resolution. A scaler maybe used to set this resolution such that the need to change frequencyand cause a TV re-sync is eliminated.

After multimedia console 100 boots and system resources are reserved,concurrent system applications execute to provide systemfunctionalities. The system functionalities are encapsulated in a set ofsystem applications that execute within the reserved system resourcesdescribed above. The operating system kernel identifies threads that aresystem application threads versus gaming application threads. The systemapplications may be scheduled to run on CPU 101 at predetermined timesand intervals in order to provide a consistent system resource view tothe application. The scheduling is to minimize cache disruption for thegaming application running on the console.

When a concurrent system application requires audio, audio processing isscheduled asynchronously to the gaming application due to timesensitivity. A multimedia console application manager (described below)controls the gaming application audio level (e.g., mute, attenuate) whensystem applications are active.

Input devices (e.g., controllers 142(1) and 142(2)) are shared by gamingapplications and system applications. The input devices are not reservedresources, but are to be switched between system applications and thegaming application such that each will have a focus of the device. Theapplication manager may control the switching of input stream, withoutknowledge of the gaming application's knowledge and a driver maintainsstate information regarding focus switches. Capture device 204 maydefine additional input devices for console 100.

It may be desirable and/or advantageous to enable other types ofcomputing platforms other than the illustrative media console 100 toimplement skin blood flow visualization in some applications. Forexample, skin blood flow visualization may be readily adapted to run onfixed computing platforms and mobile computing platforms that have videocapture capabilities. FIG. 7 shows one illustrative architecture 700 fora computing platform or device capable of executing the variouscomponents described herein for providing skin blood flow visualization.Thus, the architecture 700 illustrated in FIG. 7 shows an architecturethat may be adapted for a server computer, mobile phone, a PDA (personaldigital assistant), a smart phone, a desktop computer, a netbookcomputer, a tablet computer, GPS (Global Positioning System) device,gaming console, and/or a laptop computer. The architecture 700 may beutilized to execute any aspect of the components presented herein.

The architecture 700 illustrated in FIG. 7 includes a CPU 702, a systemmemory 704, including a RAM 706 and a ROM 708, and a system bus 710 thatcouples the memory 704 to the CPU 702. A basic input/output systemcontaining the basic routines that help to transfer information betweenelements within the architecture 700, such as during startup, is storedin the ROM 708. The architecture 700 further includes a mass storagedevice 712 for storing software code or other computer-executed codethat is utilized to implement applications, the motion tracking engine,the gesture recognition engine, the depth image processing engine, andthe operating system which may configured with functionality andoperations in a similar manner to those components shown in FIG. 3 anddescribed in the accompanying text.

The mass storage device 712 is connected to the CPU 702 through a massstorage controller (not shown) connected to the bus 710. The massstorage device 712 and its associated computer-readable storage mediaprovide non-volatile storage for the architecture 700. Although thedescription of computer-readable storage media contained herein refersto a mass storage device, such as a hard disk or CD-ROM drive, it shouldbe appreciated by those skilled in the art that computer-readable mediacan be any available computer storage media that can be accessed by thearchitecture 700.

Although the description of computer-readable storage media containedherein refers to a mass storage device, such as a hard disk or CD-ROMdrive, it should be appreciated by those skilled in the art thatcomputer-readable storage media can be any available storage media thatcan be accessed by the architecture 700.

By way of example, and not limitation, computer-readable storage mediamay include volatile and non-volatile, removable and non-removable mediaimplemented in any method or technology for storage of information suchas computer-readable instructions, data structures, program modules orother data. For example, computer-readable media includes, but is notlimited to, RAM, ROM, EPROM (erasable programmable read only memory),EEPROM (electrically erasable programmable read only memory), Flashmemory or other solid state memory technology, CD-ROM, DVDs, HD-DVD(High Definition DVD), BLU-RAY, or other optical storage, magneticcassettes, magnetic tape, magnetic disk storage or other magneticstorage devices, or any other medium which can be used to store thedesired information and which can be accessed by the architecture 700.The memory may comprise a storage medium having a concrete, tangible,physical structure. As is known, a signal does not have a concrete,tangible, physical structure. Memory, as well as any computer-readablestorage medium described herein, is not to be construed as a signal. Thememory, as well as any computer-readable storage medium describedherein, is not to be construed as a transient signal. The memory, aswell as any computer-readable storage medium described herein, is not tobe construed as a propagating signal. The memory, as well as anycomputer-readable storage medium described herein, is to be construed asan article of manufacture.

According to various aspects, the architecture 700 may operate in anetworked environment using logical connections to remote computersthrough a network. The architecture 700 may connect to the networkthrough a network interface unit 716 connected to the bus 710. It shouldbe appreciated that the network interface unit 716 also may be utilizedto connect to other types of networks and remote computer systems. Thearchitecture 700 also may include an input/output controller 718 forreceiving and processing input from a number of other devices, includinga keyboard, mouse, or electronic stylus (not shown in FIG. 7).Similarly, the input/output controller 718 may provide output to adisplay screen, a printer, or other type of output device (also notshown in FIG. 7).

It should be appreciated that the software components described hereinmay, when loaded into the CPU 702 and executed, transform the CPU 702and the overall architecture 700 from a general-purpose computing systeminto a special-purpose computing system customized to facilitate thefunctionality presented herein. The CPU 702 may be constructed from anynumber of transistors or other discrete circuit elements, which mayindividually or collectively assume any number of states. Morespecifically, the CPU 702 may operate as a finite-state machine, inresponse to executable instructions contained within the softwaremodules disclosed herein. These computer-executable instructions maytransform the CPU 702 by specifying how the CPU 702 transitions betweenstates, thereby transforming the transistors or other discrete hardwareelements constituting the CPU 702.

Encoding the software modules presented herein also may transform thephysical structure of the computer-readable storage media presentedherein. The specific transformation of physical structure may depend onvarious factors, in different implementations of this description.Examples of such factors may include, but are not limited to, thetechnology used to implement the computer-readable storage media,whether the computer-readable storage media is characterized as primaryor secondary storage, and the like. For example, if thecomputer-readable storage media is implemented as semiconductor-basedmemory, the software disclosed herein may be encoded on thecomputer-readable storage media by transforming the physical state ofthe semiconductor memory. For example, the software may transform thestate of transistors, capacitors, or other discrete circuit elementsconstituting the semiconductor memory. The software also may transformthe physical state of such components in order to store data thereupon.

As another example, the computer-readable storage media disclosed hereinmay be implemented using magnetic or optical technology. In suchimplementations, the software presented herein may transform thephysical state of magnetic or optical media, when the software isencoded therein. These transformations may include altering the magneticcharacteristics of particular locations within given magnetic media.These transformations also may include altering the physical features orcharacteristics of particular locations within given optical media, tochange the optical characteristics of those locations. Othertransformations of physical media are possible without departing fromthe scope and spirit of the present description, with the foregoingexamples provided only to facilitate this discussion.

In light of the above, it should be appreciated that many types ofphysical transformations take place in the architecture 700 in order tostore and execute the software components presented herein. It alsoshould be appreciated that the architecture 700 may include other typesof computing devices, including hand-held computers, embedded computersystems, smartphones, PDAs, and other types of computing devices knownto those skilled in the art. It is also contemplated that thearchitecture 700 may not include all of the components shown in FIG. 7,may include other components that are not explicitly shown in FIG. 7, ormay utilize an architecture completely different from that shown in FIG.7.

EXEMPLARY ASPECTS

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, a “delta” image is generated of the differencesin pixel intensity. For each subsequent comparison, an integrated deltaimage is generated of the differences in intensity of the delta imageand the corresponding differences in intensity of the subsequent deltaimage. A visual contrast of the integrated delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, a “delta” image is generated of the differencesin pixel intensity. For each subsequent comparison, an integrated deltaimage is generated of the differences in intensity of the delta imageand the corresponding differences in intensity of the subsequent deltaimage. A visual contrast of the integrated delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison. In this aspect, bias correction is appliedto the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. The images in this aspect are captured by a capture device. Inthis aspect, a “delta” image is generated of the differences in pixelintensity. For each subsequent comparison, an integrated delta image isgenerated of the differences in intensity of the delta image and thecorresponding differences in intensity of the subsequent delta image. Avisual contrast of the integrated delta image is enhanced to accentuatea characteristic associated with it, and it is visually rendered, aswell as each subsequent integrated delta image generated by eachsubsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, a “delta” image is generated of the differencesin pixel intensity. For each subsequent comparison, an integrated deltaimage is generated of the differences in intensity of the delta imageand the corresponding differences in intensity of the subsequent deltaimage. A visual contrast of the integrated delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison. In this aspect, bias correction is appliedto the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image and each corresponding pixel of a subsequentimage. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image is generated of the differences inintensity of the delta image and the corresponding differences inintensity of the subsequent delta image. A visual contrast of theintegrated delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image is generated of the differences inintensity of the delta image and the corresponding differences inintensity of the subsequent delta image. A visual contrast of theintegrated delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image is generated of thedifferences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image is generated ofthe differences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of a human face. The images in this aspect are capturedby a capture device. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. For each subsequent comparison, anintegrated delta image is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image is generated of thedifferences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison. In this aspect, bias correction is applied to the integrateddelta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image is generated ofthe differences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison. In this aspect, bias correction is applied to the integrateddelta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image is generated of the differences inintensity of the delta image and the corresponding differences inintensity of the subsequent delta image. A visual contrast of theintegrated delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent integrated delta image generated by each subsequentcomparison. In this aspect, bias correction is applied to the integrateddelta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image is generated of thedifferences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image is generated ofthe differences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image is generated of thedifferences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison. In this aspect, bias correction is applied to the integrateddelta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image is generated ofthe differences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image is generated of thedifferences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison. In this aspect, bias correction is applied to the integrateddelta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image is generated ofthe differences in intensity of the delta image and the correspondingdifferences in intensity of the subsequent delta image. A visualcontrast of the integrated delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent integrated delta image generated by each subsequentcomparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image representing blood flow in thehuman face is generated of the differences in intensity of the deltaimage and the corresponding differences in intensity of the subsequentdelta image. A visual contrast of the integrated delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image representing blood flow in thehuman face is generated of the differences in intensity of the deltaimage and the corresponding differences in intensity of the subsequentdelta image. A visual contrast of the integrated delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image representing blood flowin the human face is generated of the differences in intensity of thedelta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image representing bloodflow in the human face is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of a human face. The images in this aspect are capturedby a capture device. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. For each subsequent comparison, anintegrated delta image representing blood flow in the human face isgenerated of the differences in intensity of the delta image and thecorresponding differences in intensity of the subsequent delta image. Avisual contrast of the integrated delta image is enhanced to accentuatea characteristic associated with it, and it is visually rendered, aswell as each subsequent integrated delta image generated by eachsubsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image representing blood flowin the human face is generated of the differences in intensity of thedelta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image representing bloodflow in the human face is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. For each subsequentcomparison, an integrated delta image representing blood flow in thehuman face is generated of the differences in intensity of the deltaimage and the corresponding differences in intensity of the subsequentdelta image. A visual contrast of the integrated delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent integrated delta image generated byeach subsequent comparison. In this aspect, bias correction is appliedto the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image representing blood flowin the human face is generated of the differences in intensity of thedelta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image representing bloodflow in the human face is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of a specific color channel. In this aspect, a “delta”image is generated of the differences in pixel intensity. For eachsubsequent comparison, an integrated delta image representing blood flowin the human face is generated of the differences in intensity of thedelta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison. In this aspect, bias correctionis applied to the integrated delta image.

An aspect of the invention may be a method in which a plurality ofdifferences in intensity is determined between each pixel of a pluralityof pixels of an image of a human face and each corresponding pixel of asubsequent image of the human face. In this aspect, the pixel intensityis the intensity of the infrared color channel. In this aspect, a“delta” image is generated of the differences in pixel intensity. Foreach subsequent comparison, an integrated delta image representing bloodflow in the human face is generated of the differences in intensity ofthe delta image and the corresponding differences in intensity of thesubsequent delta image. A visual contrast of the integrated delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent integrated delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, a“delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, a“delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of a specific color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of a specific color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. The images in thisaspect are captured by a capture device. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, a“delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of a specific color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of a specific color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image andeach corresponding pixel of a subsequent image. In this aspect, thepixel intensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of a humanface. The images in this aspect are captured by a capture device. Inthis aspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity, representing a blood flow in the humanface. A visual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity, representing a blood flow in the humanface. A visual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of a humanface. The images in this aspect are captured by a capture device. Inthis aspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, a “delta” image is generated of thedifferences in pixel intensity, representing a blood flow in the humanface. A visual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of aspecific color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a system with a processor and a memorycoupled to the processor. The memory has stored on it executableinstructions that are executed by the processor cause it to effectuateoperations in which a plurality of differences in intensity isdetermined between each pixel of a plurality of pixels of an image of ahuman face and each corresponding pixel of a subsequent image of thehuman face. In this aspect, the pixel intensity is the intensity of theinfrared color channel. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. Theimages in this aspect are captured by a capture device. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image and each corresponding pixel of a subsequent image. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of a human face. The images in this aspect are captured by acapture device. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity. A visual contrast of the delta imageis enhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison. In this aspect, the delta image isintegrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of a human face. The images in this aspect are captured by acapture device. In this aspect, a “delta” image is generated of thedifferences in pixel intensity, representing a blood flow in the humanface. A visual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, a “delta” image is generated ofthe differences in pixel intensity, representing a blood flow in thehuman face. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith executable instructions that when executed by a processor cause theprocessor to effectuate operations in which a plurality of differencesin intensity is determined between each pixel of a plurality of pixelsof an image of a human face and each corresponding pixel of a subsequentimage of the human face. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity, representing a bloodflow in the human face. A visual contrast of the delta image is enhancedto accentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. The images in this aspect are captured by acapture device. In this aspect, a “delta” image is generated of thedifferences in pixel intensity. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of a specific color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image and each correspondingpixel of a subsequent image. In this aspect, the pixel intensity is theintensity of the infrared color channel. In this aspect, a “delta” imageis generated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison. In this aspect, the deltaimage is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of a human face. The images inthis aspect are captured by a capture device. In this aspect, a “delta”image is generated of the differences in pixel intensity. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of a human face. The images inthis aspect are captured by a capture device. In this aspect, a “delta”image is generated of the differences in pixel intensity, representing ablood flow in the human face. A visual contrast of the delta image isenhanced to accentuate a characteristic associated with it, and it isvisually rendered, as well as each subsequent delta image generated byeach subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison. In thisaspect, the delta image is integrated for each subsequent comparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer-implemented system withmeans for determining a plurality of differences in intensity betweeneach pixel of a plurality of pixels of an image of a human face and eachcorresponding pixel of a subsequent image of the human face. In thisaspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, a “delta”image is generated of the differences in pixel intensity. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, a “delta”image is generated of the differences in pixel intensity. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison. In thisaspect, the delta image is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of a specific color channel. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of a specific color channel. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. The images in this aspect arecaptured by a capture device. In this aspect, a “delta” image isgenerated of the differences in pixel intensity. A visual contrast ofthe delta image is enhanced to accentuate a characteristic associatedwith it, and it is visually rendered, as well as each subsequent deltaimage generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, a “delta”image is generated of the differences in pixel intensity. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison. In thisaspect, the delta image is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of a specific color channel. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of a specific color channel. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image and eachcorresponding pixel of a subsequent image. In this aspect, the pixelintensity is the intensity of the infrared color channel. In thisaspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of a human face. Theimages in this aspect are captured by a capture device. In this aspect,a “delta” image is generated of the differences in pixel intensity. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison. In this aspect, the delta image is integrated foreach subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity. A visual contrast of the delta image is enhanced toaccentuate a characteristic associated with it, and it is visuallyrendered, as well as each subsequent delta image generated by eachsubsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of a human face. Theimages in this aspect are captured by a capture device. In this aspect,a “delta” image is generated of the differences in pixel intensity,representing a blood flow in the human face. A visual contrast of thedelta image is enhanced to accentuate a characteristic associated withit, and it is visually rendered, as well as each subsequent delta imagegenerated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, a “delta” image is generated of the differences in pixelintensity, representing a blood flow in the human face. A visualcontrast of the delta image is enhanced to accentuate a characteristicassociated with it, and it is visually rendered, as well as eachsubsequent delta image generated by each subsequent comparison. In thisaspect, the delta image is integrated for each subsequent comparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of a specific colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.In this aspect, the delta image is integrated for each subsequentcomparison

An aspect of the invention may be a computer readable storage mediumwith means for determining a plurality of differences in intensitybetween each pixel of a plurality of pixels of an image of a human faceand each corresponding pixel of a subsequent image of the human face. Inthis aspect, the pixel intensity is the intensity of the infrared colorchannel. In this aspect, a “delta” image is generated of the differencesin pixel intensity, representing a blood flow in the human face. Avisual contrast of the delta image is enhanced to accentuate acharacteristic associated with it, and it is visually rendered, as wellas each subsequent delta image generated by each subsequent comparison.

Although the subject matter has been described in language specific tostructural features and/or methodological acts, it is to be understoodthat the subject matter defined in the appended claims is notnecessarily limited to the specific features or acts described above.Rather, the specific features and acts described above are disclosed asexample forms of implementing the claims. It is intended that the scopeof the technology be defined by the claims appended hereto.

What is claimed is:
 1. A method comprising: determining a plurality ofdifferences in intensity comprising a difference in intensity betweeneach pixel intensity of a plurality of pixel intensities of a firstimage and each pixel intensity of a corresponding plurality of pixelintensities of a subsequent second image; generating a delta imagecomprising the plurality of differences in intensity; and visuallyrendering, for each subsequent comparison, an integrated delta imagecomprising a second plurality of differences, the second plurality ofdifferences comprising the differences between the plurality ofdifferences of the delta image and the subsequent plurality ofdifferences of the subsequent delta image, wherein a visual contrast ofthe integrated delta image is enhanced to accentuate a characteristicassociated with the integrated delta image.
 2. The method of claim 1,further comprising applying bias correction to the integrated deltaimage.
 3. The method of claim 1, wherein the plurality of pixelintensities comprises a plurality of intensities of a specific colorchannel.
 4. The method of claim 3, wherein the color channel isinfrared.
 5. The method of claim 1, wherein the first image and thesecond image are collected by a capture device.
 6. The method of claim1, wherein the first image and the second image comprise images of ahuman face.
 7. The method of claim 6, wherein the integrated delta imagecomprises a blood flow in the human face.
 8. A system comprising: aprocessor; and a memory coupled to the processor, the memory havingstored thereon executable instructions that when executed by theprocessor cause the processor to effectuate operations comprising:determining a plurality of differences in intensity comprising adifference in intensity between each pixel intensity of a plurality ofpixel intensities of a first image and each pixel intensity of acorresponding plurality of pixel intensities of a subsequent secondimage; generating a delta image comprising the plurality of differencesin intensity; enhancing a visual contrast of the delta image toaccentuate a characteristic associated with the delta image; andvisually rendering, for each subsequent comparison, the enhanced deltaimage.
 9. The system of claim 8, wherein the operations further compriseintegrating the delta image for each subsequent comparison.
 10. Thesystem of claim 8, wherein the plurality of pixel intensities comprisesa plurality of intensities of a specific color channel.
 11. The systemof claim 10, wherein the color channel is infrared.
 12. The system ofclaim 8, wherein the first image and second image are collected by acapture device in communication with the processor.
 13. The system ofclaim 8, wherein the first image and the second image comprise images ofa human face.
 14. The system of claim 13, wherein the enhanced deltaimage comprises a blood flow in the human face.
 15. A computer readablestorage medium comprising executable instructions that when executed bya processor cause the processor to effectuate operations comprising:determining a plurality of differences in intensity comprising adifference in intensity between each pixel intensity of a plurality ofpixel intensities of a first image and each pixel intensity of acorresponding plurality of pixel intensities of a subsequent secondimage; generating a delta image comprising the plurality of differencesin intensity; enhancing a visual contrast of the delta image toaccentuate a characteristic associated with the delta image; andvisually rendering, for each subsequent comparison, the enhanced deltaimage.
 16. The computer readable storage medium of claim 15, wherein theoperations further comprise integrating the delta image for eachsubsequent comparison.
 17. The computer readable storage medium of claim15, wherein the plurality of pixel intensities comprises a plurality ofpixel intensities of a specific color channel.
 18. The computer readablestorage medium of claim 17, wherein the color channel is infrared. 19.The computer readable storage medium of claim 18, wherein the firstimage and the second image comprise images of a human face.
 20. Thecomputer readable storage medium of claim 19, wherein the enhanced deltaimage comprises a blood flow in the human face.